Failure of the Generator Control Unit 1
TASK 24-00-00-810-804-A
Failure of the Generator Control Unit 1
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 24-00-00-740-050-A ** ON A/C NOT FOR ALL
Subtask 24-00-00-810-055-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:26:06 UTC
Failure of the Generator Control Unit 1
1. Possible Causes
- GCU-1 [1XU1]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 24-22-34-000-001 | Removal of the GCU-1(2) |
| AMM 24-22-34-400-001 | Installation of the GCU-1(2) |
| AMM 24-41-00-740-002 | Operational Check of the GAPCU via the CFDS |
Subtask 24-00-00-740-050-A ** ON A/C NOT FOR ALL
A. Test
(1) Do the BITE test of the GAPCU AMM 24-41-00-740-002.
(a) If the BITE test gives the message TEST FAILED:
4. Fault Isolation(1) Do the BITE test of the GAPCU AMM 24-41-00-740-002.
(a) If the BITE test gives the message TEST FAILED:
- do the trouble shooting given in Para 4.A.
- stop the trouble shooting.
Subtask 24-00-00-810-055-A ** ON A/C NOT FOR ALL
A. If the BITE test gives the message TEST FAILED:
Subtask 24-00-00-740-051-A ** ON A/C NOT FOR ALL - push the line key adjacent to the TEST FAILED message.
- replace the GCU-1 [1XU1] AMM 24-22-34-000-001 and AMM 24-22-34-400-001.
B. Do the test given in Para. 3.